Abstract: A liquid-cooled heat sink includes a top plate having an array of circuitous liquid channels, each channel having a separate channel inlet and a common central outlet channel. The heat sink further includes a bottom plate having an inlet port and an outlet port. The heat sink further includes an intermediate plate having inlet guide channels providing fluid communication between the inlet port of the bottom plate and channel inlets of the top plate, said intermediate plate further including an outlet guide channel providing fluid communication between the common central outlet channel of the top plate and the outlet port of the bottom plate.

Abstract: A liquid-cooled heat sink includes a top plate having an array of circuitous liquid channels, each channel having a separate channel inlet and a common central outlet channel. The heat sink further includes a bottom plate having an inlet port and an outlet port. The heat sink further includes an intermediate plate having inlet guide channels providing fluid communication between the inlet port of the bottom plate and channel inlets of the top plate, said intermediate plate further including an outlet guide channel providing fluid communication between the common central outlet channel of the top plate and the outlet port of the bottom plate.

Abstract: An LED-based illumination device can use an array of four LEDs to produce high intensity light over a broad color spectrum and a broad range of color temperature. A high quality white light can be produced by using two green LEDs with a single red and a single blue LED.

Abstract: A mounting structure for at least one LED has a substrate made of silicon and/or another semiconductor, wherein at least one mounting portion formed in a front surface of the substrate for mounting at least one LED chip thereon, and cooling grooves or channels for a cooling fluid are formed in the substrate, preferably in or beneath a rear surface thereof.

Abstract: A light emitting diode (LED) package is disclosed which has an integral reflector for improving performance. The package includes a substrate for supporting the LED. A frame is formed on the top surface of the substrate surrounding the LED. During fabrication, a liquid compound is dispensed into the frame in a manner to surround the LED without covering the active area of the LED. The liquid compound includes particles for scattering light. The top surface of the liquid compound is curved due to surface tension. The curvature remains after the compound is cured. In a preferred embodiment, an encapsulating material is used to cover the LED and the compound. The reflector functions to increase the light output from the LED package.

Abstract: An LED-based illumination device can use an array of four LEDs to produce high intensity light over a broad color spectrum and a broad range of color temperature. A high quality white light can be produced by using two green LEDs with a single red and a single blue LED.

Abstract: An LED-based illumination device can use an array of four LEDs to produce high intensity light over a broad color spectrum and a broad range of color temperature. A high quality white light can be produced by using two green LEDs with a single red and a single blue LED.

Abstract: An LED-based illumination device can use an array of four LEDs to produce high intensity light over a broad color spectrum and a broad range of color temperature. A high quality white light can be produced by using two green LEDs with a single red and a single blue LED.